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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Carl E. Nuesch, MD

Radiation Oncology Physician in Austin, TX · enumerated 2006 · practices at Oncology Pharmacy Services, Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1659318095

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Registry record

Entity type Individual (Type 1)
Name Dr. Carl E. Nuesch
Credential MD
Sex Male
Practice address 6204 Balcones Dr, Austin, TX, 78731
Phone (512) 302-1771
Fax (512) 302-9774
Enumeration date Jun 2, 2006
Last updated in NPPES Jun 24, 2011

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License H1905 (TX) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
138225110 Medicaid TX -
138225112 Medicaid TX -
000P3688 Medicaid NM -
138225101 Medicaid TX -
8R1515 Other TX BLUE CROSS OF TEXAS
138225111 Medicaid TX -
138225104 Medicaid TX -
138225102 Medicaid TX -
138225105 Medicaid TX -
138225108 Medicaid TX -
138225109 Medicaid TX -
138225103 Medicaid TX -
138225106 Medicaid TX -
138225107 Medicaid TX -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Carl Nuesch?
Carl Nuesch is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-24.